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<pre class="textdiagram" id="fig72">

        +--------------------+                 +--------------------+
        |                    |      Binary     |                    |
        |       Primary      |<--------------->|       Backup       |
        |                    |       Star      |                    |
        +-----+--------+-----+                 +-----+--------+-----+
        | PUB | ROUTER | SUB |                 | PUB | ROUTER | SUB |
        \--+--+--------+-----/                 \-----+--------+-----/
           |       ^      ^                                      ^
           |       |      |                                      |
           |       |      |                                      |
           |       |      +--------------------------------------/
           |       |      |
           v       |      |
        /-----+----+---+--+--\
        | SUB |  REQ   | PUB |
        +-----+--------+-----+
        |                    |
        |       Client       |
        |                    |
        +--------------------+


               Figure 72 - High-availability Clone Server Pair
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